So I have an 06 Scion XB Release Series 3.0 I have the upgraded Alpine stereo/dvd/mp3 player that came from the dealer. I went to hook up these subs I traded for a crappy drum kit. Everything is wired in correctly and good to go, but I still don't have working subs. I tested the amp in another car and it works beautifully. Is the Alpine stereo not a plug and play?? Does anyone have any idea on this situation. I need some help......